Results 11 to 20 of about 6,169 (204)

Turbulent parameters at different heights in the atmosphere. Shack–Hartmann wavefront sensor data

Solar-Terrestrial Physics, 2022
The paper presents the results of studies of wavefront distortions at different heights in the atmosphere. We have used measurement wavefront data to determine optical turbulence parameters along the line of sight of the Large Solar Vacuum Telescope ...
Shikhovtsev A. Y., Kiselev A. V., Kovadlo P. G., Kolobov D. Y., Russkikh I. V., Tomin V. E   +5 more
doaj   +3 more sources

Quantifying ocular microaberration using a high-resolution Shack-Hartmann wavefront sensor [PDF]

Biomed Opt Express
Bang S, Kumar P, Yoon G.
europepmc   +2 more sources

Objective quantification and spatial mapping of cataract with a Shack-Hartmann wavefront sensor. [PDF]

Sci Rep, 2020
Holló CT, Miháltz K, Kurucz M, Csorba A, Kránitz K, Kovács I, Nagy ZZ, Erdei G.   +7 more
europepmc   +3 more sources

Shack–Hartmann Wavefront Sensing Based on Four-Quadrant Binary Phase Modulation

Photonics, 2022
Aiming at the problem that it is difficult for the conventional Shack–Hartmann wavefront sensor to achieve high-precision wavefront reconstruction with low spatial sampling, a kind of Shack–Hartmann wavefront sensing technology based on four-quadrant ...
Mengmeng Zhao, Wang Zhao, Kangjian Yang, Shuai Wang, Ping Yang, Fengjiao Zeng, Lingxi Kong, Chao Yang   +7 more
doaj   +1 more source

Polarized Shack-Hartmann wavefront sensor

Frontiers in Physics, 2023
Shack-Hartmann wavefront sensor (SHWFS) has been widely used in adaptive optics (AO) systems to detect phase distortion characteristics. In laser communication, target detection, vision optics and other application fields, the performance of SHWFS is ...
Yanrong Yang, Yanrong Yang, Yanrong Yang, Linhai Huang, Linhai Huang, Yawei Xiao, Yawei Xiao, Naiting Gu, Naiting Gu   +8 more
doaj   +1 more source

Centroid-Predicted Deep Neural Network in Shack-Hartmann Sensors

IEEE Photonics Journal, 2022
The Shack-Hartmann wavefront sensor produces incorrect wavefront measurements when some sub-spots are weak and missing. In this paper, a method is proposed to predict the centroids of these sub-spots for the Shack-Hartmann wavefront sensor based on the ...
Mengmeng Zhao, Wang Zhao, Shuai Wang, Ping Yang, Kangjian Yang, Haiqi Lin, Lingxi Kong   +6 more
doaj   +1 more source

Shack-Hartmann Wavefront Sensing of Ultrashort Optical Vortices

Sensors, 2021
Light beams carrying Orbital Angular Momentum (OAM), also known as optical vortices (OV), have led to fascinating new developments in fields ranging from quantum communication to novel light–matter interaction aspects. Even though several techniques have
Alok Kumar Pandey, Tanguy Larrieu, Guillaume Dovillaire, Sophie Kazamias, Olivier Guilbaud   +4 more
doaj   +1 more source

Angle-based wavefront sensing enabled by the near fields of flat optics

Nature Communications, 2021
Generally, wavefronts are measured using angle-based sensors like the Shack-Hartmann sensor. Here, the authors present an angle-sensitive device that uses flat optics integrated on a focal plane array for compact wavefront sensing with improved ...
Soongyu Yi, Jin Xiang, Ming Zhou, Zhicheng Wu, Lan Yang, Zongfu Yu   +5 more
doaj   +1 more source

One-Dimensional High-Resolution Wavefront Sensor Enabled by Subwavelength Compound Gratings

Photonics, 2023
Angle sensors are widely used for wavefront measurements, which is attributed to their integration and robustness. Currently, commercial sensors are available with pixel sizes in the order of wavelengths.
Yunlong Meng, Xinyu Shen, Junyang Xie, Yao Peng, Xiaowen Shao, Feng Yan, Cheng Yang   +6 more
doaj   +1 more source

Performance Characterization of Deep-Phase-Retrieval Shack-Hartmann Wavefront Sensors

IEEE Photonics Journal, 2023
Shack-Hartmann wavefront sensor (SHWFS) is the most popular wavefront sensor in adaptive optics systems. The Deep-Phase-Retrieval Wavefront Reconstruction (DPRWR) method, which was proposed by our group previously, is a kind of deep learning-based ...
Manting Zhang, Youming Guo
doaj   +1 more source